German Shepherd lover, thinking of switching breeds

I asked this already, but maybe in the wrong forum. Sorry for the repeat.
After 30 years of loving German Shepherds, I'm considering a different breed. I've been gravitating to Standard Poodles and Dobies. I'm fine with a mixed breed, as long as I have an idea of what the mix is. Those of you who have been GSD owners and who made a switch -- what did you choose and why, and how did it turn out for you?
I love the intelligence, loyalty, beauty, and protective factor of GSDs, but my last two dogs have been short-lived and had health problems, and my last girl was very anxious. I would love a smart, athletic, snuggly, outgoing, healthy, long-lived dog 50-70 pounds. Not shedding, or not shedding much, would be lovely.
Thanks!